Extreme tooth decay resulting from long-term use of methamphetamine.

plural of meth mouth

(organic chemistry, uncountable) The simplest aliphatic hydrocarbon, CH₄, being a constituent of natural gas, and one of the most abundant greenhouse gases.

A process by which a task is completed; a way of doing something (followed by the adposition of, to or for before the purpose of the process).

(transitive) To apply a method to. / (casting, by extension, transitive) To apply particular treatment methods to (a mold).

(skateboarding, snowboarding) Ellipsis of method air..

(organic chemistry) The univalent hydrocarbon radical, CH₃-, formally derived from methane by the loss of a hydrogen atom; a compound or part of a compound formed by the attachment of such a radical.

(sciences) A method of discovering knowledge about the natural world based in making falsifiable predictions (hypotheses), testing them empirically, and developing theories that match known data from repeatable physical experimentation.

Rain, in the form of liquid methane rather than water, that falls on Saturn's moon Titan and creates equivalent geographical features (rivers, lakes etc.) as does normal rain.

(cricket) A mathematical algorithm for generating revised target scores for the side batting second in a rain-affected one-day match.